If you are time-starved please don't waste one minute on this material, workbooks or DVD. I wish I could rate it zero stars. Don't worry about offending your non-Christian friends because there is zero substance and zero Biblical application. Our church group tried it for 2 weeks and everyone threatened to quit if we didn't move on to better material.
My wife and I used it as a nightly devotion. Both of us feel that it is an excellent resource for today's marriages and that it has strengthen our relationship and how we view time in relationship to family life. Such a powerful book that we bought three more to give to family and friends.